At least 15 Afghan soldiers were killed when Taliban fighters attacked their army base in the southern province of Kandahar. Defence Ministry today said this is the second such assault this week.<br/><br/>The attack in Shah Wali Kot district late yesterday came just three days after 10 Afghan soldiers were killed when Taliban militants stormed another base in the same area.<br/><br/>The attack marks another setback for NATO-backed Afghan forces. It comes just a month after the Taliban killed at least 135 soldiers in the northern province of Balkh in the deadliest insurgent attack on an Afghan military base since 2001.